<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>

    <el-card>
      <el-alert class="header"
                title="添加商品信息"
                type="info"
                center
                show-icon :closable="false">
      </el-alert>
      <el-steps :space="260" :active="activeIndex-0" finish-status="success" class="steps" align-center>
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <!--tab栏区域-->
      <el-form :model="addForm" :rules="rules" ref="addFormRules" label-width="100px" label-position="top">
        <el-tabs :tab-position="tabPosition" v-model="activeIndex" :before-leave="beforeTabLeave"
                 @tab-click="tabClicked">
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input v-model="addForm.goods_price" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input v-model="addForm.goods_weight" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input v-model="addForm.goods_number" type="number"></el-input>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cat">
              <el-cascader
                v-model="addForm.goods_cat"
                :options="parentCateList"
                expand-trigger="hover" :props="cascaderProps"
                @change="handleChange"></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item :label="item.attr_name" v-for="item in mayTableData" :key="item.attr_id">
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox :label="cb" v-for="(cb,i) in item.attr_vals" :key="i" border></el-checkbox>

              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item :label="item.attr_name" v-for="item in onlyTableData" :key="item.attr_id">
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>

          </el-tab-pane>
          <el-tab-pane label="商品照片" name="3">
            <el-upload
              :action="uploadURL"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              :headers="headerObj"
              list-type="picture" :on-success="handleSuccess">
              <el-button size="small" type=" primary">点击上传</el-button>

            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!--富文本编辑器-->
            <quill-editor v-model="addForm.goods_introduce">

            </quill-editor>
            <el-button type="primary" class="btnAdd" @click="add">添加商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>

    <el-dialog
      title="图片预览"
      :visible.sync="previewDialogVisible"
      width="50%">
      <img :src="previewPath" alt="" class="previewImg">

    </el-dialog>
  </div>
</template>

<script>
import _ from 'lodash'//深cope的插件

export default {
  name: "Add",
  data() {
    return {
      activeIndex: 0,
      tabPosition: 'left',
      addForm: {
        goods_name: "",
        goods_price: 0,
        goods_weight: 0,
        goods_number: 0,
        goods_cat: [],
        pics: [],
        goods_introduce:'',
        attrs:[]
      },
      rules: {
        goods_name: [
          {required: true, message: '请输入商品名称', trigger: 'blur'},
          {min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur'}
        ],
        goods_price: [
          {required: true, message: '请输入商品价格', trigger: 'blur'},
        ],
        goods_weight: [
          {required: true, message: '请输入商品重量', trigger: 'blur'},
        ],
        goods_cat: [
          {required: true, message: '请输入商品数量', trigger: 'blur'},
        ]
      },
      cascaderProps: {
        value: 'cat_id',
        children: 'children',
        label: 'cat_name'
      },
      parentCateList: [],
      mayTableData: [],
      onlyTableData: [],
      uploadURL: 'http://127.0.0.1:8888/api/private/v1/upload',
      headerObj: {
        Authorization: window.sessionStorage.getItem('token')
      },
      previewPath: '',
      previewDialogVisible: false
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const {data: res} = await this.$http.get('categories', {params: {type: 3}})
      if (res.meta.status === 200) {
        this.parentCateList = res.data;
      } else {
        this.$message.error(res.meta.msg)
      }
    },
    handleChange() {
      console.log(this.addForm.goods_cat);
      if (this.addForm.goods_cat.length !== 3) {
        this.addForm.goods_cat = []
      }
    },
    beforeTabLeave(activeName, oldActiveName) {
      console.log('activeName' + activeName, 'oldActiveName' + oldActiveName)
      console.log(this.addForm.goods_cat.length !== 3);
      if ((oldActiveName === '0') && (this.addForm.goods_cat.length !== 3)) {
        this.$message.error('请选择三级分类')
        return false
      }
    },
    async tabClicked() {
      console.log(this.activeIndex)
      if (this.activeIndex === '1') {
        const {data: res} = await this.$http.get(`categories/${this.cateId}/attributes`, {params: {sel: 'many'}})
        if (res.meta.status !== 200) {
          this.$message.error('获取数据失败')
        } else {
          console.log(res.data)
          res.data.forEach((item) => {
              return item.attr_vals = item.attr_vals ? item.attr_vals.split(' ') : []
            }
          )
          this.mayTableData = res.data
          console.log(this.mayTableData)
        }
      } else if (this.activeIndex === '2') {
        const {data: res} = await this.$http.get(`categories/${this.cateId}/attributes`, {params: {sel: 'only'}})
        if (res.meta.status !== 200) {
          this.$message.error('获取数据失败')
        } else {
          console.log(res.data)
          this.onlyTableData = res.data
        }
      }

    },
    handlePreview(res) {
      console.log(res.response.data.url)
      this.previewPath = res.response.data.url
      this.previewDialogVisible = true
    },
    handleRemove(res) {
      console.log(res.response.data.tmp_path)
      const i = this.addForm.pics.findIndex((item) => {
        item.pic === res.response.data.tmp_path
      })
      this.addForm.pics.splice(i, 1)
      console.log(this.addForm.pics)
    },
    handleSuccess(res) {
      if (res.meta.status === 200) {
        const picInfo = {pic: res.data.tmp_path}
        this.addForm.pics.push(picInfo)
        console.log(this.addForm.pics)
      }
    },
    add(){
      this.$refs.addFormRules.validate(async (valid)=>{
        if(!valid){
          return this.$message.error('请填写必要选项')
        }
       const form=_.cloneDeep(this.addForm)//因为多联选择器关联的数据是数组所以将数据进行深cope
        form.goods_cat=form.goods_cat.join(',')
        this.mayTableData.forEach((item)=>{
          const newInfo={attr_id:item.attr_id,attr_val:item.attr_vals.join(' ')}
          this.addForm.attrs.push(newInfo);
        })
        this.onlyTableData.forEach((item)=>{
          const newInfo={attr_id:item.attr_id,attr_val:item.attr_vals}
          this.addForm.attrs.push(newInfo);
          }
        )
        form.attrs=this.addForm.attrs
         const {data:res}=await this.$http.post('goods',form)
        if(res.meta.status===201){
          this.$message.success(res.meta.msg)
          await this.$router.push('/goods')
        }else{
          this.$message.error(res.meta.msg)
        }
      })
    }
  },
  computed: {
    cateId() {
      if (this.addForm.goods_cat.length === 3) {
        return this.addForm.goods_cat[2]
      } else {
        return null
      }
    }
  }
}
</script>

<style lang="less" scoped>
.header {
  margin-bottom: 20px;
}

.el-checkbox {
  margin: 0 5px 0 0 !important;
}
.previewImg{
  width: 100%;
}
.btnAdd{
  margin: 10px;
}
</style>
